Solar Panel Maintenance Checklist

Solar panel maintenance checklist

Regular inspection of the solar energy system is essential in maintaining efficacy and safety. Solar panels are susceptible to diverse problems such as corrosions, shades, delamination, and micro-cracks. Strict adherence to the solar system maintenance schedule enhances the durability and reliability of the systems. Comprehensive care aims to minimize chances of system shutdown due to fault in the solar panels or one of the components. This article presents a solar panel maintenance checklist to extend your solar system’s lifespan.

Who is Responsible for the Maintenance?

Licensed electricians are the best individuals to execute solar panels maintenance. Each jurisdiction has a record for registered solar panel installation experts. The use of professionals assists in minimizing risks and enhancing efficient and uninterrupted power supply. However, homeowners can clean solar panels in case of shade, dust, or other minor problems. The engagement of licensed electricians maintaining solar panels is key to solar energy systems’ durability, safety, and efficiency.

Maintenance Checklist for Solar panel

1. Site Inspection

Elements to check

Shades are undesirable in solar power generation. Homeowners should ensure that trees or obstacles do not shade rooftop photovoltaic cells. Consequently, debris close to the solar or beneath is undesirable. For example, birds or rodent nests under the solar panels must be removed. The site must be free of any shade or foreign particles that might compromise the solar panels’ functionality. 

Reason for inspection

Shading the array by trees and other vegetations causes a decline in power output. The clearance allows the users to maximize daytime solar radiation. Consequently, debris might lead to waterlogging, leading to damaged roofs. Therefore, site inspection helps maximize sunrays and protect the roof’s integrity and solar panels.

2. The health of the photovoltaic cells

Elements to check

Cleanliness of the solar panels is the priority in the maintenance checklist. The buildup of dust, leaves, and other foreign particles must be inspected. Consequently, visual defects such as microcracking, discolorization, accumulation of moisture, and corrosion must be identified. Accumulation of rust and other internal defects aids in establishing appropriate remedies. 

Reason for inspection

Microcracks contribute to corrosion and moisture accumulation in the solar panels. Delays in the inspection can lead to increased solar panel maintenance costs or failure of the panels. For that reason, the assessment is vital in ensuring the corrosion and accumulation of moisture, dust, and other particles are minimized. The health of the photovoltaic cells is key to optimum solar energy generation.

3. Roof safety and solar panels security 

Elements to check

House roofs and other support structures must be in stable condition. Loose fixing makes the solar panels vulnerable to excessive rain, strong winds, or hurricanes. As a result, experts and property owners must ensure the solar panels are appropriately clamped on the roofs. Also, the panels have to be sealed to avoid the entry of small animals like rodents who can compromise the wiring. 

Reason for inspection

Examining the condition of the roof helps in ensuring solar panels are safe. Leaking roofs can lead to the displacement of the photovoltaic cells due to weather changes. The fall of the panels is a health hazard because it can cause fire or damage to the solar panels. Hence, the roof must be strong enough to support the solar panel installation. 

4. Power output

Elements to check

The voltage and the current output of the solar panels are measured during the scheduled maintenance. Open circuit voltage measured in Volts and the short circuit current in Amperes is compared with the rating in the solar panel label. The main consideration during the measurement is maximum sunlight since the absence of sun will lead to no readings. 

Reason for inspection

The obtained values indicate the health and functioning of the solar panels. Short circuit current and open-circuit voltage equivalent to rated values depict efficient and proper functioning solar panels. However, a lower value shows the presence of a problem that requires advanced diagnosis. 

5. The wiring cables 

Elements to check

Crucial inspection aspects include the layout and the support of the cables. Consequently, the electric wires should be adequately insulated with no observable deterioration. The connectors on the solar panel side must be well fixed with no loose connection. Another essential element is to ensure cables conduit pipes are sealed with no overheating signs. Electricians must ensure there are no exposed or loose hanging wires. 

Reason for inspection

Damaged wires lead to short-circuiting and overheating issues that damage the solar panels. Individuals maintaining solar panels must ensure deteriorated wires and loose connectors are changed to avoid significant damages. Also, conduit pipes are sealed and properly fixed to prevent the entry of moisture that might cause failures. Hence, the health of the wires is paramount in the proper functioning of solar panels. 

6. Solar panels protection system 

Elements to check

Fuses, circuit breakers, isolators, and residual current devices are the ones to be checked during solar power maintenance. Fuses must be well fixed and functioning, while the isolators are effective. The specialists will inspect the components based on the manufacturer’s ratings and specifications. Likewise, checking the proper installation of all the protection components is necessary during the solar panel’s maintenance. 

Reason for inspection

The solar panel protection components assist in the proper functioning of the system. Regular maintenance allows the owners to protect their solar panels from issues such as overheating or short-circuiting that might cause a fire. Fuses and circuit breakers promote safety by protecting solar power components such as batteries and inverters.

Solar panels are made up of 6 key components, each of which plays an important role in the panel’s performance. For more information on how these key components work together in your panel’s performance, check out our article about the main solar panel components!


Solar panel maintenance checklist involves technical aspects and general inspection. The involvement of certified electrical technicians is essential in solar panel installation and solar panels maintenance. The experts check the technical factors such as power output, installation, and defects. Additionally, they can clean and address other solar panel maintenance issues. However, property owners can do general inspections such as shading and dust in the panels. The vigilance enables them to notify technicians of solar power maintenance needs. 

Advanced solar power monitoring system enables users to monitor power output and efficiency. The strategy aids in reducing solar panel maintenance costs due to timely interventions. Also, other gadgets in the solar power systems, such as batteries and inverters, must be regularly checked to ascertain their health. Strict adherence to the solar system maintenance schedule suggested by licensed technicians enables solar power users to enjoy uninterrupted renewable energy supply to homestead and businesses.

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